Model Comparison
Qwen2 Instruct 72B
vs. Qwen3.5 Omni Flash
Comparing 2 AI models · 11 benchmarks · Alibaba
Recommended Pick
AlQwen3.5 Omni Flash6 metric winsStrongest on: Throughput, Reasoning, Intelligence
Lowest Price
Qwen2 Instruct 72B
$0.00/1M input price
Best Reasoning
Qwen3.5 Omni Flash
33.4 reasoning score
Blends available reasoning benchmarks
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Price gap
Qwen2 Instruct 72B is ∞x cheaper on input tokens than Qwen3.5 Omni Flash.
Reasoning gap
Qwen3.5 Omni Flash leads Qwen2 Instruct 72B by 7.1 points on reasoning.
Top-pick rationale
Qwen3.5 Omni Flash wins 6 measurable categories, including Throughput, Reasoning, Intelligence, GPQA.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
Qwen2 Instruct 72B
Alibaba
TTFT
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Time
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tok/s
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Tokens
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Cost
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Qwen3.5 Omni Flash
Alibaba
TTFT
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Time
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tok/s
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Tokens
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Cost
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Which answer was more useful?
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Full Comparison
| Metric | Al Qwen2 Instruct 72B | Top Pick Al Qwen3.5 Omni Flash |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $0.00/1M | $0.10/1M |
| Output Cost | $0.00/1M | $0.80/1M |
| Blended (3:1) | — | $0.28/1M |
| Specifications | ||
| Organization | Alibaba | Alibaba |
| Release Date | Jun 7, 2024 | Mar 30, 2026 |
| Performance & Speed | ||
| Throughput | — | 245.1 tok/s |
| TTFT | — | 1068ms |
| Latency | — | 1068ms |
| Composite Indices | ||
| Value Score | — | 100.0 |
| Reasoning Score | 26.3 | 33.4 |
| Intelligence | 6.0 | 19.0 |
| Standard Benchmarks | ||
| GPQA | 37.1% | 74.2% |
| MMLU Pro | 62.2% | — |
| HLE | 3.7% | 7.1% |
| LiveCodeBench | 15.9% | — |
| MATH 500 | 70.1% | — |
| AIME (Original) | 14.7% | — |
| SciCode | 22.9% | 25.5% |
| LCR | — | 44.0% |
| IFBench | — | 38.0% |
| TAU-bench v2 | — | 84.5% |
| TerminalBench Hard | — | 8.3% |
Key Takeaways
Qwen2 Instruct 72B offers the best value at $0.00/1M,making it ideal for high-volume applications and cost-conscious projects.
Qwen3.5 Omni Flash has the strongest reasoning profile with a 33.4 reasoning score,combining the available reasoning-heavy benchmarks.
All models support context windows of ∞+ tokens,suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
Qwen2 Instruct 72B
- Cost-sensitive applications
- High-volume processing
Qwen3.5 Omni Flash
- Complex reasoning tasks
- Research & analysis
